linux/drivers/media/dvb-frontends/af9013.c
Antti Palosaari cdd19b526f [media] af9013: refactor power control
Move power-up and power-down functionality to init/sleep ops and
get rid of old function.

Fixes and simplifies power-up functionality slightly.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-06-20 10:35:08 -03:00

1570 lines
34 KiB
C

/*
* Afatech AF9013 demodulator driver
*
* Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
* Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
*
* Thanks to Afatech who kindly provided information.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include "af9013_priv.h"
struct af9013_state {
struct i2c_client *client;
struct regmap *regmap;
struct dvb_frontend fe;
u32 clk;
u8 tuner;
u32 if_frequency;
u8 ts_mode;
u8 ts_output_pin;
bool spec_inv;
u8 api_version[4];
u8 gpio[4];
/* tuner/demod RF and IF AGC limits used for signal strength calc */
u8 signal_strength_en, rf_50, rf_80, if_50, if_80;
u16 signal_strength;
u32 ber;
u32 ucblocks;
u16 snr;
u32 bandwidth_hz;
enum fe_status fe_status;
unsigned long set_frontend_jiffies;
unsigned long read_status_jiffies;
bool first_tune;
bool i2c_gate_state;
unsigned int statistics_step:3;
struct delayed_work statistics_work;
};
static int af9013_set_gpio(struct af9013_state *state, u8 gpio, u8 gpioval)
{
struct i2c_client *client = state->client;
int ret;
u8 pos;
u16 addr;
dev_dbg(&client->dev, "gpio %u, gpioval %02x\n", gpio, gpioval);
/*
* GPIO0 & GPIO1 0xd735
* GPIO2 & GPIO3 0xd736
*/
switch (gpio) {
case 0:
case 1:
addr = 0xd735;
break;
case 2:
case 3:
addr = 0xd736;
break;
default:
ret = -EINVAL;
goto err;
}
switch (gpio) {
case 0:
case 2:
pos = 0;
break;
case 1:
case 3:
default:
pos = 4;
break;
}
ret = regmap_update_bits(state->regmap, addr, 0x0f << pos,
gpioval << pos);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_statistics_ber_unc_start(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret;
dev_dbg(&client->dev, "\n");
/* reset and start BER counter */
ret = regmap_update_bits(state->regmap, 0xd391, 0x10, 0x10);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_statistics_ber_unc_result(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret;
unsigned int utmp;
u8 buf[5];
dev_dbg(&client->dev, "\n");
/* check if error bit count is ready */
ret = regmap_read(state->regmap, 0xd391, &utmp);
if (ret)
goto err;
if (!((utmp >> 4) & 0x01)) {
dev_dbg(&client->dev, "not ready\n");
return 0;
}
ret = regmap_bulk_read(state->regmap, 0xd387, buf, 5);
if (ret)
goto err;
state->ber = (buf[2] << 16) | (buf[1] << 8) | buf[0];
state->ucblocks += (buf[4] << 8) | buf[3];
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_statistics_snr_start(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret;
dev_dbg(&client->dev, "\n");
/* start SNR meas */
ret = regmap_update_bits(state->regmap, 0xd2e1, 0x08, 0x08);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_statistics_snr_result(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i, len;
unsigned int utmp;
u8 buf[3];
u32 snr_val;
const struct af9013_snr *uninitialized_var(snr_lut);
dev_dbg(&client->dev, "\n");
/* check if SNR ready */
ret = regmap_read(state->regmap, 0xd2e1, &utmp);
if (ret)
goto err;
if (!((utmp >> 3) & 0x01)) {
dev_dbg(&client->dev, "not ready\n");
return 0;
}
/* read value */
ret = regmap_bulk_read(state->regmap, 0xd2e3, buf, 3);
if (ret)
goto err;
snr_val = (buf[2] << 16) | (buf[1] << 8) | buf[0];
/* read current modulation */
ret = regmap_read(state->regmap, 0xd3c1, &utmp);
if (ret)
goto err;
switch ((utmp >> 6) & 3) {
case 0:
len = ARRAY_SIZE(qpsk_snr_lut);
snr_lut = qpsk_snr_lut;
break;
case 1:
len = ARRAY_SIZE(qam16_snr_lut);
snr_lut = qam16_snr_lut;
break;
case 2:
len = ARRAY_SIZE(qam64_snr_lut);
snr_lut = qam64_snr_lut;
break;
default:
goto err;
}
for (i = 0; i < len; i++) {
utmp = snr_lut[i].snr;
if (snr_val < snr_lut[i].val)
break;
}
state->snr = utmp * 10; /* dB/10 */
c->cnr.stat[0].svalue = 1000 * utmp;
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_statistics_signal_strength(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret = 0;
u8 buf[2], rf_gain, if_gain;
int signal_strength;
dev_dbg(&client->dev, "\n");
if (!state->signal_strength_en)
return 0;
ret = regmap_bulk_read(state->regmap, 0xd07c, buf, 2);
if (ret)
goto err;
rf_gain = buf[0];
if_gain = buf[1];
signal_strength = (0xffff / \
(9 * (state->rf_50 + state->if_50) - \
11 * (state->rf_80 + state->if_80))) * \
(10 * (rf_gain + if_gain) - \
11 * (state->rf_80 + state->if_80));
if (signal_strength < 0)
signal_strength = 0;
else if (signal_strength > 0xffff)
signal_strength = 0xffff;
state->signal_strength = signal_strength;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static void af9013_statistics_work(struct work_struct *work)
{
struct af9013_state *state = container_of(work,
struct af9013_state, statistics_work.work);
unsigned int next_msec;
/* update only signal strength when demod is not locked */
if (!(state->fe_status & FE_HAS_LOCK)) {
state->statistics_step = 0;
state->ber = 0;
state->snr = 0;
}
switch (state->statistics_step) {
default:
state->statistics_step = 0;
/* fall-through */
case 0:
af9013_statistics_signal_strength(&state->fe);
state->statistics_step++;
next_msec = 300;
break;
case 1:
af9013_statistics_snr_start(&state->fe);
state->statistics_step++;
next_msec = 200;
break;
case 2:
af9013_statistics_ber_unc_start(&state->fe);
state->statistics_step++;
next_msec = 1000;
break;
case 3:
af9013_statistics_snr_result(&state->fe);
state->statistics_step++;
next_msec = 400;
break;
case 4:
af9013_statistics_ber_unc_result(&state->fe);
state->statistics_step++;
next_msec = 100;
break;
}
schedule_delayed_work(&state->statistics_work,
msecs_to_jiffies(next_msec));
}
static int af9013_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *fesettings)
{
fesettings->min_delay_ms = 800;
fesettings->step_size = 0;
fesettings->max_drift = 0;
return 0;
}
static int af9013_set_frontend(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i, sampling_freq;
bool auto_mode, spec_inv;
u8 buf[6];
u32 if_frequency, freq_cw;
dev_dbg(&client->dev, "frequency %u, bandwidth_hz %u\n",
c->frequency, c->bandwidth_hz);
/* program tuner */
if (fe->ops.tuner_ops.set_params) {
ret = fe->ops.tuner_ops.set_params(fe);
if (ret)
goto err;
}
/* program CFOE coefficients */
if (c->bandwidth_hz != state->bandwidth_hz) {
for (i = 0; i < ARRAY_SIZE(coeff_lut); i++) {
if (coeff_lut[i].clock == state->clk &&
coeff_lut[i].bandwidth_hz == c->bandwidth_hz) {
break;
}
}
/* Return an error if can't find bandwidth or the right clock */
if (i == ARRAY_SIZE(coeff_lut)) {
ret = -EINVAL;
goto err;
}
ret = regmap_bulk_write(state->regmap, 0xae00, coeff_lut[i].val,
sizeof(coeff_lut[i].val));
if (ret)
goto err;
}
/* program frequency control */
if (c->bandwidth_hz != state->bandwidth_hz || state->first_tune) {
/* get used IF frequency */
if (fe->ops.tuner_ops.get_if_frequency) {
ret = fe->ops.tuner_ops.get_if_frequency(fe,
&if_frequency);
if (ret)
goto err;
} else {
if_frequency = state->if_frequency;
}
dev_dbg(&client->dev, "if_frequency %u\n", if_frequency);
sampling_freq = if_frequency;
while (sampling_freq > (state->clk / 2))
sampling_freq -= state->clk;
if (sampling_freq < 0) {
sampling_freq *= -1;
spec_inv = state->spec_inv;
} else {
spec_inv = !state->spec_inv;
}
freq_cw = DIV_ROUND_CLOSEST_ULL((u64)sampling_freq * 0x800000,
state->clk);
if (spec_inv)
freq_cw = 0x800000 - freq_cw;
buf[0] = (freq_cw >> 0) & 0xff;
buf[1] = (freq_cw >> 8) & 0xff;
buf[2] = (freq_cw >> 16) & 0x7f;
freq_cw = 0x800000 - freq_cw;
buf[3] = (freq_cw >> 0) & 0xff;
buf[4] = (freq_cw >> 8) & 0xff;
buf[5] = (freq_cw >> 16) & 0x7f;
ret = regmap_bulk_write(state->regmap, 0xd140, buf, 3);
if (ret)
goto err;
ret = regmap_bulk_write(state->regmap, 0x9be7, buf, 6);
if (ret)
goto err;
}
/* clear TPS lock flag */
ret = regmap_update_bits(state->regmap, 0xd330, 0x08, 0x08);
if (ret)
goto err;
/* clear MPEG2 lock flag */
ret = regmap_update_bits(state->regmap, 0xd507, 0x40, 0x00);
if (ret)
goto err;
/* empty channel function */
ret = regmap_update_bits(state->regmap, 0x9bfe, 0x01, 0x00);
if (ret)
goto err;
/* empty DVB-T channel function */
ret = regmap_update_bits(state->regmap, 0x9bc2, 0x01, 0x00);
if (ret)
goto err;
/* transmission parameters */
auto_mode = false;
memset(buf, 0, 3);
switch (c->transmission_mode) {
case TRANSMISSION_MODE_AUTO:
auto_mode = true;
break;
case TRANSMISSION_MODE_2K:
break;
case TRANSMISSION_MODE_8K:
buf[0] |= (1 << 0);
break;
default:
dev_dbg(&client->dev, "invalid transmission_mode\n");
auto_mode = true;
}
switch (c->guard_interval) {
case GUARD_INTERVAL_AUTO:
auto_mode = true;
break;
case GUARD_INTERVAL_1_32:
break;
case GUARD_INTERVAL_1_16:
buf[0] |= (1 << 2);
break;
case GUARD_INTERVAL_1_8:
buf[0] |= (2 << 2);
break;
case GUARD_INTERVAL_1_4:
buf[0] |= (3 << 2);
break;
default:
dev_dbg(&client->dev, "invalid guard_interval\n");
auto_mode = true;
}
switch (c->hierarchy) {
case HIERARCHY_AUTO:
auto_mode = true;
break;
case HIERARCHY_NONE:
break;
case HIERARCHY_1:
buf[0] |= (1 << 4);
break;
case HIERARCHY_2:
buf[0] |= (2 << 4);
break;
case HIERARCHY_4:
buf[0] |= (3 << 4);
break;
default:
dev_dbg(&client->dev, "invalid hierarchy\n");
auto_mode = true;
}
switch (c->modulation) {
case QAM_AUTO:
auto_mode = true;
break;
case QPSK:
break;
case QAM_16:
buf[1] |= (1 << 6);
break;
case QAM_64:
buf[1] |= (2 << 6);
break;
default:
dev_dbg(&client->dev, "invalid modulation\n");
auto_mode = true;
}
/* Use HP. How and which case we can switch to LP? */
buf[1] |= (1 << 4);
switch (c->code_rate_HP) {
case FEC_AUTO:
auto_mode = true;
break;
case FEC_1_2:
break;
case FEC_2_3:
buf[2] |= (1 << 0);
break;
case FEC_3_4:
buf[2] |= (2 << 0);
break;
case FEC_5_6:
buf[2] |= (3 << 0);
break;
case FEC_7_8:
buf[2] |= (4 << 0);
break;
default:
dev_dbg(&client->dev, "invalid code_rate_HP\n");
auto_mode = true;
}
switch (c->code_rate_LP) {
case FEC_AUTO:
auto_mode = true;
break;
case FEC_1_2:
break;
case FEC_2_3:
buf[2] |= (1 << 3);
break;
case FEC_3_4:
buf[2] |= (2 << 3);
break;
case FEC_5_6:
buf[2] |= (3 << 3);
break;
case FEC_7_8:
buf[2] |= (4 << 3);
break;
case FEC_NONE:
break;
default:
dev_dbg(&client->dev, "invalid code_rate_LP\n");
auto_mode = true;
}
switch (c->bandwidth_hz) {
case 6000000:
break;
case 7000000:
buf[1] |= (1 << 2);
break;
case 8000000:
buf[1] |= (2 << 2);
break;
default:
dev_dbg(&client->dev, "invalid bandwidth_hz\n");
ret = -EINVAL;
goto err;
}
ret = regmap_bulk_write(state->regmap, 0xd3c0, buf, 3);
if (ret)
goto err;
if (auto_mode) {
/* clear easy mode flag */
ret = regmap_write(state->regmap, 0xaefd, 0x00);
if (ret)
goto err;
dev_dbg(&client->dev, "auto params\n");
} else {
/* set easy mode flag */
ret = regmap_write(state->regmap, 0xaefd, 0x01);
if (ret)
goto err;
ret = regmap_write(state->regmap, 0xaefe, 0x00);
if (ret)
goto err;
dev_dbg(&client->dev, "manual params\n");
}
/* Reset FSM */
ret = regmap_write(state->regmap, 0xffff, 0x00);
if (ret)
goto err;
state->bandwidth_hz = c->bandwidth_hz;
state->set_frontend_jiffies = jiffies;
state->first_tune = false;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_get_frontend(struct dvb_frontend *fe,
struct dtv_frontend_properties *c)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret;
u8 buf[3];
dev_dbg(&client->dev, "\n");
ret = regmap_bulk_read(state->regmap, 0xd3c0, buf, 3);
if (ret)
goto err;
switch ((buf[1] >> 6) & 3) {
case 0:
c->modulation = QPSK;
break;
case 1:
c->modulation = QAM_16;
break;
case 2:
c->modulation = QAM_64;
break;
}
switch ((buf[0] >> 0) & 3) {
case 0:
c->transmission_mode = TRANSMISSION_MODE_2K;
break;
case 1:
c->transmission_mode = TRANSMISSION_MODE_8K;
}
switch ((buf[0] >> 2) & 3) {
case 0:
c->guard_interval = GUARD_INTERVAL_1_32;
break;
case 1:
c->guard_interval = GUARD_INTERVAL_1_16;
break;
case 2:
c->guard_interval = GUARD_INTERVAL_1_8;
break;
case 3:
c->guard_interval = GUARD_INTERVAL_1_4;
break;
}
switch ((buf[0] >> 4) & 7) {
case 0:
c->hierarchy = HIERARCHY_NONE;
break;
case 1:
c->hierarchy = HIERARCHY_1;
break;
case 2:
c->hierarchy = HIERARCHY_2;
break;
case 3:
c->hierarchy = HIERARCHY_4;
break;
}
switch ((buf[2] >> 0) & 7) {
case 0:
c->code_rate_HP = FEC_1_2;
break;
case 1:
c->code_rate_HP = FEC_2_3;
break;
case 2:
c->code_rate_HP = FEC_3_4;
break;
case 3:
c->code_rate_HP = FEC_5_6;
break;
case 4:
c->code_rate_HP = FEC_7_8;
break;
}
switch ((buf[2] >> 3) & 7) {
case 0:
c->code_rate_LP = FEC_1_2;
break;
case 1:
c->code_rate_LP = FEC_2_3;
break;
case 2:
c->code_rate_LP = FEC_3_4;
break;
case 3:
c->code_rate_LP = FEC_5_6;
break;
case 4:
c->code_rate_LP = FEC_7_8;
break;
}
switch ((buf[1] >> 2) & 3) {
case 0:
c->bandwidth_hz = 6000000;
break;
case 1:
c->bandwidth_hz = 7000000;
break;
case 2:
c->bandwidth_hz = 8000000;
break;
}
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret;
unsigned int utmp;
/*
* Return status from the cache if it is younger than 2000ms with the
* exception of last tune is done during 4000ms.
*/
if (time_is_after_jiffies(
state->read_status_jiffies + msecs_to_jiffies(2000)) &&
time_is_before_jiffies(
state->set_frontend_jiffies + msecs_to_jiffies(4000))
) {
*status = state->fe_status;
return 0;
} else {
*status = 0;
}
/* MPEG2 lock */
ret = regmap_read(state->regmap, 0xd507, &utmp);
if (ret)
goto err;
if ((utmp >> 6) & 0x01)
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
FE_HAS_SYNC | FE_HAS_LOCK;
if (!*status) {
/* TPS lock */
ret = regmap_read(state->regmap, 0xd330, &utmp);
if (ret)
goto err;
if ((utmp >> 3) & 0x01)
*status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
FE_HAS_VITERBI;
}
state->fe_status = *status;
state->read_status_jiffies = jiffies;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct af9013_state *state = fe->demodulator_priv;
*snr = state->snr;
return 0;
}
static int af9013_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
struct af9013_state *state = fe->demodulator_priv;
*strength = state->signal_strength;
return 0;
}
static int af9013_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct af9013_state *state = fe->demodulator_priv;
*ber = state->ber;
return 0;
}
static int af9013_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
struct af9013_state *state = fe->demodulator_priv;
*ucblocks = state->ucblocks;
return 0;
}
static int af9013_init(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret, i, len;
unsigned int utmp;
u8 buf[3];
const struct af9013_reg_bit *init;
dev_dbg(&client->dev, "\n");
/* ADC on */
ret = regmap_update_bits(state->regmap, 0xd73a, 0x08, 0x00);
if (ret)
goto err;
/* Clear reset */
ret = regmap_update_bits(state->regmap, 0xd417, 0x02, 0x00);
if (ret)
goto err;
/* Disable reset */
ret = regmap_update_bits(state->regmap, 0xd417, 0x10, 0x00);
if (ret)
goto err;
/* write API version to firmware */
ret = regmap_bulk_write(state->regmap, 0x9bf2, state->api_version, 4);
if (ret)
goto err;
/* program ADC control */
switch (state->clk) {
case 28800000: /* 28.800 MHz */
utmp = 0;
break;
case 20480000: /* 20.480 MHz */
utmp = 1;
break;
case 28000000: /* 28.000 MHz */
utmp = 2;
break;
case 25000000: /* 25.000 MHz */
utmp = 3;
break;
default:
ret = -EINVAL;
goto err;
}
ret = regmap_update_bits(state->regmap, 0x9bd2, 0x0f, utmp);
if (ret)
goto err;
utmp = div_u64((u64)state->clk * 0x80000, 1000000);
buf[0] = (utmp >> 0) & 0xff;
buf[1] = (utmp >> 8) & 0xff;
buf[2] = (utmp >> 16) & 0xff;
ret = regmap_bulk_write(state->regmap, 0xd180, buf, 3);
if (ret)
goto err;
/* load OFSM settings */
dev_dbg(&client->dev, "load ofsm settings\n");
len = ARRAY_SIZE(ofsm_init);
init = ofsm_init;
for (i = 0; i < len; i++) {
u16 reg = init[i].addr;
u8 mask = GENMASK(init[i].pos + init[i].len - 1, init[i].pos);
u8 val = init[i].val << init[i].pos;
ret = regmap_update_bits(state->regmap, reg, mask, val);
if (ret)
goto err;
}
/* load tuner specific settings */
dev_dbg(&client->dev, "load tuner specific settings\n");
switch (state->tuner) {
case AF9013_TUNER_MXL5003D:
len = ARRAY_SIZE(tuner_init_mxl5003d);
init = tuner_init_mxl5003d;
break;
case AF9013_TUNER_MXL5005D:
case AF9013_TUNER_MXL5005R:
case AF9013_TUNER_MXL5007T:
len = ARRAY_SIZE(tuner_init_mxl5005);
init = tuner_init_mxl5005;
break;
case AF9013_TUNER_ENV77H11D5:
len = ARRAY_SIZE(tuner_init_env77h11d5);
init = tuner_init_env77h11d5;
break;
case AF9013_TUNER_MT2060:
len = ARRAY_SIZE(tuner_init_mt2060);
init = tuner_init_mt2060;
break;
case AF9013_TUNER_MC44S803:
len = ARRAY_SIZE(tuner_init_mc44s803);
init = tuner_init_mc44s803;
break;
case AF9013_TUNER_QT1010:
case AF9013_TUNER_QT1010A:
len = ARRAY_SIZE(tuner_init_qt1010);
init = tuner_init_qt1010;
break;
case AF9013_TUNER_MT2060_2:
len = ARRAY_SIZE(tuner_init_mt2060_2);
init = tuner_init_mt2060_2;
break;
case AF9013_TUNER_TDA18271:
case AF9013_TUNER_TDA18218:
len = ARRAY_SIZE(tuner_init_tda18271);
init = tuner_init_tda18271;
break;
case AF9013_TUNER_UNKNOWN:
default:
len = ARRAY_SIZE(tuner_init_unknown);
init = tuner_init_unknown;
break;
}
for (i = 0; i < len; i++) {
u16 reg = init[i].addr;
u8 mask = GENMASK(init[i].pos + init[i].len - 1, init[i].pos);
u8 val = init[i].val << init[i].pos;
ret = regmap_update_bits(state->regmap, reg, mask, val);
if (ret)
goto err;
}
/* TS interface */
if (state->ts_output_pin == 7)
utmp = 1 << 3 | state->ts_mode << 1;
else
utmp = 0 << 3 | state->ts_mode << 1;
ret = regmap_update_bits(state->regmap, 0xd500, 0x0e, utmp);
if (ret)
goto err;
/* enable lock led */
ret = regmap_update_bits(state->regmap, 0xd730, 0x01, 0x01);
if (ret)
goto err;
/* check if we support signal strength */
if (!state->signal_strength_en) {
ret = regmap_read(state->regmap, 0x9bee, &utmp);
if (ret)
goto err;
state->signal_strength_en = (utmp >> 0) & 0x01;
}
/* read values needed for signal strength calculation */
if (state->signal_strength_en && !state->rf_50) {
ret = regmap_bulk_read(state->regmap, 0x9bbd, &state->rf_50, 1);
if (ret)
goto err;
ret = regmap_bulk_read(state->regmap, 0x9bd0, &state->rf_80, 1);
if (ret)
goto err;
ret = regmap_bulk_read(state->regmap, 0x9be2, &state->if_50, 1);
if (ret)
goto err;
ret = regmap_bulk_read(state->regmap, 0x9be4, &state->if_80, 1);
if (ret)
goto err;
}
/* SNR */
ret = regmap_write(state->regmap, 0xd2e2, 0x01);
if (ret)
goto err;
/* BER / UCB */
buf[0] = (10000 >> 0) & 0xff;
buf[1] = (10000 >> 8) & 0xff;
ret = regmap_bulk_write(state->regmap, 0xd385, buf, 2);
if (ret)
goto err;
/* enable FEC monitor */
ret = regmap_update_bits(state->regmap, 0xd392, 0x02, 0x02);
if (ret)
goto err;
state->first_tune = true;
schedule_delayed_work(&state->statistics_work, msecs_to_jiffies(400));
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_sleep(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
int ret;
unsigned int utmp;
dev_dbg(&client->dev, "\n");
/* stop statistics polling */
cancel_delayed_work_sync(&state->statistics_work);
/* disable lock led */
ret = regmap_update_bits(state->regmap, 0xd730, 0x01, 0x00);
if (ret)
goto err;
/* Enable reset */
ret = regmap_update_bits(state->regmap, 0xd417, 0x10, 0x10);
if (ret)
goto err;
/* Start reset execution */
ret = regmap_write(state->regmap, 0xaeff, 0x01);
if (ret)
goto err;
/* Wait reset performs */
ret = regmap_read_poll_timeout(state->regmap, 0xd417, utmp,
(utmp >> 1) & 0x01, 5000, 1000000);
if (ret)
goto err;
if (!((utmp >> 1) & 0x01)) {
ret = -ETIMEDOUT;
goto err;
}
/* ADC off */
ret = regmap_update_bits(state->regmap, 0xd73a, 0x08, 0x08);
if (ret)
goto err;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
int ret;
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
dev_dbg(&client->dev, "enable %d\n", enable);
/* gate already open or close */
if (state->i2c_gate_state == enable)
return 0;
if (state->ts_mode == AF9013_TS_MODE_USB)
ret = regmap_update_bits(state->regmap, 0xd417, 0x08,
enable << 3);
else
ret = regmap_update_bits(state->regmap, 0xd607, 0x04,
enable << 2);
if (ret)
goto err;
state->i2c_gate_state = enable;
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static void af9013_release(struct dvb_frontend *fe)
{
struct af9013_state *state = fe->demodulator_priv;
struct i2c_client *client = state->client;
dev_dbg(&client->dev, "\n");
i2c_unregister_device(client);
}
static const struct dvb_frontend_ops af9013_ops;
static int af9013_download_firmware(struct af9013_state *state)
{
struct i2c_client *client = state->client;
int ret, i, len, rem;
unsigned int utmp;
u8 buf[4];
u16 checksum = 0;
const struct firmware *firmware;
const char *name = AF9013_FIRMWARE;
dev_dbg(&client->dev, "\n");
/* Check whether firmware is already running */
ret = regmap_read(state->regmap, 0x98be, &utmp);
if (ret)
goto err;
dev_dbg(&client->dev, "firmware status %02x\n", utmp);
if (utmp == 0x0c)
return 0;
dev_info(&client->dev, "found a '%s' in cold state, will try to load a firmware\n",
af9013_ops.info.name);
/* Request the firmware, will block and timeout */
ret = request_firmware(&firmware, name, &client->dev);
if (ret) {
dev_info(&client->dev, "firmware file '%s' not found %d\n",
name, ret);
goto err;
}
dev_info(&client->dev, "downloading firmware from file '%s'\n",
name);
/* Write firmware checksum & size */
for (i = 0; i < firmware->size; i++)
checksum += firmware->data[i];
buf[0] = (checksum >> 8) & 0xff;
buf[1] = (checksum >> 0) & 0xff;
buf[2] = (firmware->size >> 8) & 0xff;
buf[3] = (firmware->size >> 0) & 0xff;
ret = regmap_bulk_write(state->regmap, 0x50fc, buf, 4);
if (ret)
goto err_release_firmware;
/* Download firmware */
#define LEN_MAX 16
for (rem = firmware->size; rem > 0; rem -= LEN_MAX) {
len = min(LEN_MAX, rem);
ret = regmap_bulk_write(state->regmap,
0x5100 + firmware->size - rem,
&firmware->data[firmware->size - rem],
len);
if (ret) {
dev_err(&client->dev, "firmware download failed %d\n",
ret);
goto err_release_firmware;
}
}
release_firmware(firmware);
/* Boot firmware */
ret = regmap_write(state->regmap, 0xe205, 0x01);
if (ret)
goto err;
/* Check firmware status. 0c=OK, 04=fail */
ret = regmap_read_poll_timeout(state->regmap, 0x98be, utmp,
(utmp == 0x0c || utmp == 0x04),
5000, 1000000);
if (ret)
goto err;
dev_dbg(&client->dev, "firmware status %02x\n", utmp);
if (utmp == 0x04) {
ret = -ENODEV;
dev_err(&client->dev, "firmware did not run\n");
goto err;
} else if (utmp != 0x0c) {
ret = -ENODEV;
dev_err(&client->dev, "firmware boot timeout\n");
goto err;
}
dev_info(&client->dev, "found a '%s' in warm state\n",
af9013_ops.info.name);
return 0;
err_release_firmware:
release_firmware(firmware);
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
/*
* XXX: That is wrapper to af9013_probe() via driver core in order to provide
* proper I2C client for legacy media attach binding.
* New users must use I2C client binding directly!
*/
struct dvb_frontend *af9013_attach(const struct af9013_config *config,
struct i2c_adapter *i2c)
{
struct i2c_client *client;
struct i2c_board_info board_info;
struct af9013_platform_data pdata;
pdata.clk = config->clock;
pdata.tuner = config->tuner;
pdata.if_frequency = config->if_frequency;
pdata.ts_mode = config->ts_mode;
pdata.ts_output_pin = 7;
pdata.spec_inv = config->spec_inv;
memcpy(&pdata.api_version, config->api_version, sizeof(pdata.api_version));
memcpy(&pdata.gpio, config->gpio, sizeof(pdata.gpio));
pdata.attach_in_use = true;
memset(&board_info, 0, sizeof(board_info));
strlcpy(board_info.type, "af9013", sizeof(board_info.type));
board_info.addr = config->i2c_addr;
board_info.platform_data = &pdata;
client = i2c_new_device(i2c, &board_info);
if (!client || !client->dev.driver)
return NULL;
return pdata.get_dvb_frontend(client);
}
EXPORT_SYMBOL(af9013_attach);
static const struct dvb_frontend_ops af9013_ops = {
.delsys = { SYS_DVBT },
.info = {
.name = "Afatech AF9013",
.frequency_min = 174000000,
.frequency_max = 862000000,
.frequency_stepsize = 250000,
.frequency_tolerance = 0,
.caps = FE_CAN_FEC_1_2 |
FE_CAN_FEC_2_3 |
FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 |
FE_CAN_FEC_7_8 |
FE_CAN_FEC_AUTO |
FE_CAN_QPSK |
FE_CAN_QAM_16 |
FE_CAN_QAM_64 |
FE_CAN_QAM_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_HIERARCHY_AUTO |
FE_CAN_RECOVER |
FE_CAN_MUTE_TS
},
.release = af9013_release,
.init = af9013_init,
.sleep = af9013_sleep,
.get_tune_settings = af9013_get_tune_settings,
.set_frontend = af9013_set_frontend,
.get_frontend = af9013_get_frontend,
.read_status = af9013_read_status,
.read_snr = af9013_read_snr,
.read_signal_strength = af9013_read_signal_strength,
.read_ber = af9013_read_ber,
.read_ucblocks = af9013_read_ucblocks,
.i2c_gate_ctrl = af9013_i2c_gate_ctrl,
};
static struct dvb_frontend *af9013_get_dvb_frontend(struct i2c_client *client)
{
struct af9013_state *state = i2c_get_clientdata(client);
dev_dbg(&client->dev, "\n");
return &state->fe;
}
/* Own I2C access routines needed for regmap as chip uses extra command byte */
static int af9013_wregs(struct i2c_client *client, u8 cmd, u16 reg,
const u8 *val, int len)
{
int ret;
u8 buf[21];
struct i2c_msg msg[1] = {
{
.addr = client->addr,
.flags = 0,
.len = 3 + len,
.buf = buf,
}
};
if (3 + len > sizeof(buf)) {
ret = -EINVAL;
goto err;
}
buf[0] = (reg >> 8) & 0xff;
buf[1] = (reg >> 0) & 0xff;
buf[2] = cmd;
memcpy(&buf[3], val, len);
ret = i2c_transfer(client->adapter, msg, 1);
if (ret < 0) {
goto err;
} else if (ret != 1) {
ret = -EREMOTEIO;
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_rregs(struct i2c_client *client, u8 cmd, u16 reg,
u8 *val, int len)
{
int ret;
u8 buf[3];
struct i2c_msg msg[2] = {
{
.addr = client->addr,
.flags = 0,
.len = 3,
.buf = buf,
}, {
.addr = client->addr,
.flags = I2C_M_RD,
.len = len,
.buf = val,
}
};
buf[0] = (reg >> 8) & 0xff;
buf[1] = (reg >> 0) & 0xff;
buf[2] = cmd;
ret = i2c_transfer(client->adapter, msg, 2);
if (ret < 0) {
goto err;
} else if (ret != 2) {
ret = -EREMOTEIO;
goto err;
}
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_regmap_write(void *context, const void *data, size_t count)
{
struct i2c_client *client = context;
struct af9013_state *state = i2c_get_clientdata(client);
int ret, i;
u8 cmd;
u16 reg = ((u8 *)data)[0] << 8|((u8 *)data)[1] << 0;
u8 *val = &((u8 *)data)[2];
const unsigned int len = count - 2;
if (state->ts_mode == AF9013_TS_MODE_USB && (reg & 0xff00) != 0xae00) {
cmd = 0 << 7|0 << 6|(len - 1) << 2|1 << 1|1 << 0;
ret = af9013_wregs(client, cmd, reg, val, len);
if (ret)
goto err;
} else if (reg >= 0x5100 && reg < 0x8fff) {
/* Firmware download */
cmd = 1 << 7|1 << 6|(len - 1) << 2|1 << 1|1 << 0;
ret = af9013_wregs(client, cmd, reg, val, len);
if (ret)
goto err;
} else {
cmd = 0 << 7|0 << 6|(1 - 1) << 2|1 << 1|1 << 0;
for (i = 0; i < len; i++) {
ret = af9013_wregs(client, cmd, reg + i, val + i, 1);
if (ret)
goto err;
}
}
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_regmap_read(void *context, const void *reg_buf,
size_t reg_size, void *val_buf, size_t val_size)
{
struct i2c_client *client = context;
struct af9013_state *state = i2c_get_clientdata(client);
int ret, i;
u8 cmd;
u16 reg = ((u8 *)reg_buf)[0] << 8|((u8 *)reg_buf)[1] << 0;
u8 *val = &((u8 *)val_buf)[0];
const unsigned int len = val_size;
if (state->ts_mode == AF9013_TS_MODE_USB && (reg & 0xff00) != 0xae00) {
cmd = 0 << 7|0 << 6|(len - 1) << 2|1 << 1|0 << 0;
ret = af9013_rregs(client, cmd, reg, val_buf, len);
if (ret)
goto err;
} else {
cmd = 0 << 7|0 << 6|(1 - 1) << 2|1 << 1|0 << 0;
for (i = 0; i < len; i++) {
ret = af9013_rregs(client, cmd, reg + i, val + i, 1);
if (ret)
goto err;
}
}
return 0;
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct af9013_state *state;
struct af9013_platform_data *pdata = client->dev.platform_data;
struct dtv_frontend_properties *c;
int ret, i;
u8 firmware_version[4];
static const struct regmap_bus regmap_bus = {
.read = af9013_regmap_read,
.write = af9013_regmap_write,
};
static const struct regmap_config regmap_config = {
.reg_bits = 16,
.val_bits = 8,
};
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state) {
ret = -ENOMEM;
goto err;
}
/* Setup the state */
state->client = client;
i2c_set_clientdata(client, state);
state->clk = pdata->clk;
state->tuner = pdata->tuner;
state->if_frequency = pdata->if_frequency;
state->ts_mode = pdata->ts_mode;
state->ts_output_pin = pdata->ts_output_pin;
state->spec_inv = pdata->spec_inv;
memcpy(&state->api_version, pdata->api_version, sizeof(state->api_version));
memcpy(&state->gpio, pdata->gpio, sizeof(state->gpio));
INIT_DELAYED_WORK(&state->statistics_work, af9013_statistics_work);
state->regmap = regmap_init(&client->dev, &regmap_bus, client,
&regmap_config);
if (IS_ERR(state->regmap)) {
ret = PTR_ERR(state->regmap);
goto err_kfree;
}
/* Download firmware */
if (state->ts_mode != AF9013_TS_MODE_USB) {
ret = af9013_download_firmware(state);
if (ret)
goto err_regmap_exit;
}
/* Firmware version */
ret = regmap_bulk_read(state->regmap, 0x5103, firmware_version,
sizeof(firmware_version));
if (ret)
goto err_regmap_exit;
/* Set GPIOs */
for (i = 0; i < sizeof(state->gpio); i++) {
ret = af9013_set_gpio(state, i, state->gpio[i]);
if (ret)
goto err_regmap_exit;
}
/* Create dvb frontend */
memcpy(&state->fe.ops, &af9013_ops, sizeof(state->fe.ops));
if (!pdata->attach_in_use)
state->fe.ops.release = NULL;
state->fe.demodulator_priv = state;
/* Setup callbacks */
pdata->get_dvb_frontend = af9013_get_dvb_frontend;
/* Init stats to indicate which stats are supported */
c = &state->fe.dtv_property_cache;
c->cnr.len = 1;
dev_info(&client->dev, "Afatech AF9013 successfully attached\n");
dev_info(&client->dev, "firmware version: %d.%d.%d.%d\n",
firmware_version[0], firmware_version[1],
firmware_version[2], firmware_version[3]);
return 0;
err_regmap_exit:
regmap_exit(state->regmap);
err_kfree:
kfree(state);
err:
dev_dbg(&client->dev, "failed %d\n", ret);
return ret;
}
static int af9013_remove(struct i2c_client *client)
{
struct af9013_state *state = i2c_get_clientdata(client);
dev_dbg(&client->dev, "\n");
/* Stop statistics polling */
cancel_delayed_work_sync(&state->statistics_work);
regmap_exit(state->regmap);
kfree(state);
return 0;
}
static const struct i2c_device_id af9013_id_table[] = {
{"af9013", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, af9013_id_table);
static struct i2c_driver af9013_driver = {
.driver = {
.name = "af9013",
.suppress_bind_attrs = true,
},
.probe = af9013_probe,
.remove = af9013_remove,
.id_table = af9013_id_table,
};
module_i2c_driver(af9013_driver);
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Afatech AF9013 DVB-T demodulator driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(AF9013_FIRMWARE);